package com.woniuxy.main.pay.handler;

import java.io.IOException;
import java.io.PrintWriter;
import java.io.UnsupportedEncodingException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.UUID;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

import com.alipay.api.AlipayClient;
import com.alipay.api.AlipayApiException;
import com.alipay.api.DefaultAlipayClient;
import com.alipay.api.internal.util.AlipaySignature;
import com.alipay.api.request.AlipayTradePagePayRequest;
import com.alipay.api.request.AlipayTradeRefundRequest;
import com.woniuxy.main.pay.service.PayService;
import com.woniuxy.main.utils.AlipayConfig;

@Controller
public class PayController {
	private Integer userid=0;
	private Integer newMoneySum=0;
	
	@RequestMapping("/pay")
	public void pay(HttpServletRequest request,HttpServletResponse response){
//		System.out.println("支付"); 
		HttpSession session=request.getSession();
		Integer userId=(Integer) session.getAttribute("userID");
		Integer moneySum=(Integer) session.getAttribute("moneySum");
		userid=userId;newMoneySum=moneySum;
		//支付操作
		//获得初始化的AlipayClient
		AlipayClient alipayClient = new DefaultAlipayClient(AlipayConfig.gatewayUrl, AlipayConfig.app_id, AlipayConfig.merchant_private_key, "json", AlipayConfig.charset, AlipayConfig.alipay_public_key, AlipayConfig.sign_type);
		
		//设置请求参数
		AlipayTradePagePayRequest alipayRequest = new AlipayTradePagePayRequest();
		alipayRequest.setReturnUrl(AlipayConfig.return_url);
		alipayRequest.setNotifyUrl(AlipayConfig.notify_url);
		
//		//商户订单号，商户网站订单系统中唯一订单号，必填
//		String out_trade_no = new String(request.getParameter("WIDout_trade_no").getBytes("ISO-8859-1"),"UTF-8");
//		//付款金额，必填
//		String total_amount = new String(request.getParameter("WIDtotal_amount").getBytes("ISO-8859-1"),"UTF-8");
//		//订单名称，必填
//		String subject = new String(request.getParameter("WIDsubject").getBytes("ISO-8859-1"),"UTF-8");
//		//商品描述，可空
//		String body = new String(request.getParameter("WIDbody").getBytes("ISO-8859-1"),"UTF-8");
		SimpleDateFormat sdf=new SimpleDateFormat("yyyyMMddHHmmss");
		String orderNumber=sdf.format(new Date());
//		Integer orderNmber=101;
		String out_trade_no =orderNumber.toString();
		String total_amount =moneySum.toString();
		String subject ="YOGA";
		alipayRequest.setBizContent("{\"out_trade_no\":\""+ out_trade_no +"\"," 
				+ "\"total_amount\":\""+ total_amount +"\"," 
				+ "\"subject\":\""+ subject +"\"," 
//				+ "\"body\":\""+ body +"\"," 
				+ "\"product_code\":\"FAST_INSTANT_TRADE_PAY\"}");
		
		
		//请求
		try {
			String result=alipayClient.pageExecute(alipayRequest).getBody();
			response.setContentType("text/html;charset=utf-8");
			//输出
			response.getWriter().println(result);
		} catch (Exception e) {
			e.printStackTrace();
		}
		Integer balance=payService.searchBalance(userid);
		Integer money=newMoneySum+balance;
		payService.addBalance(userid,money);
	}
	
	//退款
	@RequestMapping("/refund")
	public void refund(Integer moneySum,HttpServletResponse response,HttpSession session) throws IOException, AlipayApiException{
//		System.out.println("退款");
		response.setContentType("text/html;charset=utf-8");
	    PrintWriter out = response.getWriter();
	    //获得初始化的AlipayClient
	    AlipayClient alipayClient = new DefaultAlipayClient(AlipayConfig.gatewayUrl, AlipayConfig.app_id, AlipayConfig.merchant_private_key, "json", AlipayConfig.charset, AlipayConfig.alipay_public_key, AlipayConfig.sign_type);
	    //设置请求参数
	    AlipayTradeRefundRequest alipayRequest = new AlipayTradeRefundRequest();
	    //商户订单号，必填
//	    SimpleDateFormat sdf=new SimpleDateFormat("yyyyMMddHHmmss");
//		String orderNumber=sdf.format(new Date());
	    Integer orderNmber=101;
	    String out_trade_no = new String(orderNmber.toString());
	    //需要退款的金额，该金额不能大于订单金额，必填
	    String refund_amount = new String(moneySum.toString());
	    //标识一次退款请求，同一笔交易多次退款需要保证唯一，如需部分退款，则此参数必传
	    String out_request_no = new String(UUID.randomUUID().toString());
	 
	    alipayRequest.setBizContent("{\"out_trade_no\":\""+ out_trade_no +"\","
	            + "\"refund_amount\":\""+ refund_amount +"\","
	            + "\"out_request_no\":\""+ out_request_no +"\"}");
	  	//请求
	  	String result = alipayClient.execute(alipayRequest).getBody();
	  	//输出
	  	out.println(result);

	}
	
	@RequestMapping("/notify")
	public void pay_notify(HttpServletRequest request,HttpServletResponse response) throws UnsupportedEncodingException, AlipayApiException{
		System.out.println("支付成功调用 pay_notify");
		//获取支付宝POST过来反馈信息
		Map<String,String> params = new HashMap<String,String>();
		Map<String,String[]> requestParams = request.getParameterMap();
		for (Iterator<String> iter = requestParams.keySet().iterator(); iter.hasNext();) {
			String name = (String) iter.next();
			String[] values = (String[]) requestParams.get(name);
			String valueStr = "";
			for (int i = 0; i < values.length; i++) {
				valueStr = (i == values.length - 1) ? valueStr + values[i]
						: valueStr + values[i] + ",";
			}
			//乱码解决，这段代码在出现乱码时使用
//			valueStr = new String(valueStr.getBytes("ISO-8859-1"), "utf-8");
			params.put(name, valueStr);
		}
		
		boolean signVerified = AlipaySignature.rsaCheckV1(params, AlipayConfig.alipay_public_key, AlipayConfig.charset, AlipayConfig.sign_type); //调用SDK验证签名

		//——请在这里编写您的程序（以下代码仅作参考）——
		
		/* 实际验证过程建议商户务必添加以下校验：
		1、需要验证该通知数据中的out_trade_no是否为商户系统中创建的订单号，
		2、判断total_amount是否确实为该订单的实际金额（即商户订单创建时的金额），
		3、校验通知中的seller_id（或者seller_email) 是否为out_trade_no这笔单据的对应的操作方（有的时候，一个商户可能有多个seller_id/seller_email）
		4、验证app_id是否为该商户本身。
		*/
		if(signVerified) {//验证成功
			//商户订单号
			String out_trade_no = new String(request.getParameter("out_trade_no").getBytes("ISO-8859-1"),"UTF-8");
		
			//支付宝交易号
			String trade_no = new String(request.getParameter("trade_no").getBytes("ISO-8859-1"),"UTF-8");
		
			//交易状态
			String trade_status = new String(request.getParameter("trade_status").getBytes("ISO-8859-1"),"UTF-8");
			
			if(trade_status.equals("TRADE_FINISHED")){
				//判断该笔订单是否在商户网站中已经做过处理
				//如果没有做过处理，根据订单号（out_trade_no）在商户网站的订单系统中查到该笔订单的详细，并执行商户的业务程序
				//如果有做过处理，不执行商户的业务程序
					
				//注意：
				//退款日期超过可退款期限后（如三个月可退款），支付宝系统发送该交易状态通知
			}else if (trade_status.equals("TRADE_SUCCESS")){
				//判断该笔订单是否在商户网站中已经做过处理
				//如果没有做过处理，根据订单号（out_trade_no）在商户网站的订单系统中查到该笔订单的详细，并执行商户的业务程序
				//如果有做过处理，不执行商户的业务程序
				
				//注意：
				//付款完成后，支付宝系统发送该交易状态通知
//				PayService payService=new PayServiceImp();
//				String result=payService.pay(out_trade_no,trade_no);
//				System.out.println(result);
				
			}
			
			try {
				response.getWriter().println("success");
			} catch (IOException e) {
				e.printStackTrace();
			}
		}else {//验证失败
			try {
				response.getWriter().println("fail");
				System.out.println("失败");
			} catch (IOException e) {
				e.printStackTrace();
			}
		
			//调试用，写文本函数记录程序运行情况是否正常
			//String sWord = AlipaySignature.getSignCheckContentV1(params);
			//AlipayConfig.logResult(sWord);
		}
		
	}
	
	@Autowired
	private PayService payService;
	@RequestMapping("/return")
	public void pay_return(HttpServletResponse response){
		System.out.println("支付成功调用 pay_return"+userid);
//		Integer balance=payService.searchBalance(userid);
//		Integer money=newMoneySum+balance;
//		payService.addBalance(userid,money);
		
		try {
			response.sendRedirect("http://localhost:9999/chat/myWallet");
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
	
}
